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Wang, Y.; Guo, J.; Li, G.; Roussos, E.; Zhao, J.: Variation in Cosmic-Ray Intensity Lags Sunspot Number: Implications of Late Opening of Solar Magnetic Field. The Astrophysical Journal 928, p. 157 (2022)
Guo, J.; Liu, S.; Fletcher, L.; Kontar, E. P.: Relationship Between Hard and Soft X-Ray Emission Components of a Solar Flare. Astrophysical Journal 728 (1), 4 (2011)
Guo, J. N.; Büchner, J.; Otto, A.; Santos, J.; Marsch, E.; Gan, W. Q.: Is the 3-D magnetic null point with a convective electric field an efficient particle accelerator? Astronomy and Astrophysics 513, A73 (2010)
Analyzing the high spatial resolution solar Ca II H and K emission data obtained by the SUNRISE mission and building a model of other stars more active than the Sun
The Planetary Plasma Environments group (PPE) has a strong heritage in the exploration of planetary magnetospheres and space plasma interactions throughout the solar system. It has contributed instruments to several past missions that flew-by or orbited Jupiter (Galileo, Cassini, Ulysses). The PPE participates in the JUICE mission by contributing hardware and scientific expertise to the Particle Environment Package (PEP).
The magnetic field in the solar atmosphere exceeds the geomagnetic field strength by four orders of magnitude. It greatly influences the processes of energy transport within the solar atmosphere, and dominates the morphology of the solar chromosphere and corona. Kinetic energy from convective motions in the Sun can be efficiently stored in magnetic fields and subsequently released - to heat the solar corona to several million degrees or to blast off coronal mass ejections.